How to pass the UA apprenticeship aptitude test

The UA apprenticeship aptitude test is not a test of trade knowledge, and nobody expects you to know how to sweat a joint before you start. It tests the abilities the apprenticeship builds on. That is good news: those abilities improve quickly with practice, and most applicants do very little of it.

Step 1: find out what your local actually uses

UA locals choose their own tests, so start with your local's recruitment notice or training-center page. Look for:

• The test. A named test (ACT WorkKeys, Wonderlic, a Differential Aptitude Test) or "aptitude test".
• The sections. Local 342, for example, lists math (numerical ability), spatial relations and mechanical aptitude.
• The pass mark. Local 396 asks for 70% and Local 342 for a 75% composite.
• What happens next. At Local 396, passing earns an interview, and applicants are then placed on a ranking list on their overall score.

If the notice does not say, call the training center and ask. It is a normal question.

Step 2: aim above the pass mark

Where locals rank applicants, passing is the floor. Local 1 in New York combines its aptitude test and interview into one score for its ranked list; Local 396 ranks applicants on their overall score after the interview. A few extra points on the test can move you up the list, so prepare to do well, not just to scrape through.

Step 3: rebuild math by hand

This is where most of the marks are won and lost. Steamfitters Local 602's published sample math test shows the level: long division with decimals carried to the hundredth or thousandth, adding and multiplying fractions and mixed numbers, percentages, feet-and-inches and gallons-and-quarts problems, a circle's area, and solving for x. None of it is hard. All of it is slow if you have not done it on paper since school.

• Practise fractions and decimals by hand until you stop hesitating over which way the decimal point moves.
• Learn to carry feet and inches: 12 inches to a foot, so 7 in + 9 in = 16 in = 1 ft 4 in.
• Know a few constants cold: 12 in = 1 ft, 4 qt = 1 gal, π ≈ 3.14, and 2.31 feet of water = 1 psi.
• Work through pipe offset math — it practises decimals, fractions and Pythagoras in one go.

Step 4: practise mechanical and spatial questions

If your local's test includes them, these are the sections most applicants have never seen. Mechanical questions ask what happens — which way a gear turns, where water settles, which lever needs less effort. Spatial questions ask you to turn, fold or count shapes in your head. Both get noticeably easier after a few dozen questions. Our spatial reasoning guide explains each question type.

Step 5: practise against a clock

Locals rarely publish their time limits, but aptitude tests are timed and most applicants find them tight. Once you are accurate, time yourself. If you get stuck, move on and come back — every question is usually worth the same.

A four-week plan

Week	Focus
1	Find your local's notice. Take one free sample of each section to see where you stand. Start daily hand-math practice: 20 minutes of fractions and decimals.
2	Trade math: feet and inches, fall per foot, pressure, volume, BTUs. Begin mechanical questions if your local tests them.
3	Spatial questions and reading. Review every wrong answer and write down why it was wrong.
4	Timed section mocks, then a full mock. Fix the weakest section. Rest the night before.

On the day

• Bring what your notice asks for — ID, fees, documents. Local 396, for example, charges a test fee on the day of the exam.
• Read every question to the end before you start working. Many wrong answers come from answering the question you expected, not the one asked.
• Do not leave blanks unless the instructions say wrong answers cost marks.

Our UA aptitude practice has a free timed sample for every section, and the full banks include unlimited randomized mocks.